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<h1 class="title">扩展QML -方法示例</h1>
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<p>方法的支持。</p>
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<p>这个例子建立在:</p>
<ul>
<li><a href="qtqml-referenceexamples-coercion-example.html">扩展QML -继承和强制示例</a></li>
<li><a href="qtqml-referenceexamples-properties-example.html">扩展QML -对象和列表属性类型示例</a></li>
<li><a href="qtqml-referenceexamples-adding-example.html">扩展QML -添加类型示例</a></li>
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<p>方法示例在<code>BirthdayParty</code> 类中有一个额外的方法:<code>invite()</code>。<code>invite()</code>是用<a href="../qtcore/qobject.html#Q_INVOKABLE">Q_INVOKABLE</a>声明的，这样就可以从QML调用它。</p>
<pre class="cpp">

      Q_INVOKABLE <span class="type">void</span> invite(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&amp;</span>name);

</pre>
<p>在<code>example.qml</code>中，<code>invite()</code>方法在<a href="qml-qtqml-component.html#completed-signal">Component.onCompleted</a>信号处理程序中被调用:</p>
<pre class="qml">

  import QtQuick 2.0
  import People 1.0

  <span class="type">BirthdayParty</span> {
      <span class="name">host</span>: <span class="name">Person</span> {
          <span class="name">name</span>: <span class="string">&quot;Bob Jones&quot;</span>
          <span class="name">shoeSize</span>: <span class="number">12</span>
      }
      <span class="name">guests</span>: [
          <span class="type">Person</span> { <span class="name">name</span>: <span class="string">&quot;Leo Hodges&quot;</span> },
          <span class="type">Person</span> { <span class="name">name</span>: <span class="string">&quot;Jack Smith&quot;</span> },
          <span class="type">Person</span> { <span class="name">name</span>: <span class="string">&quot;Anne Brown&quot;</span> }
      ]

      <span class="name">Component</span>.onCompleted: <span class="name">invite</span>(<span class="string">&quot;William Green&quot;</span>)
  }

</pre>
<p><span lang="zh-cn">文件：</span></p>
<ul>
<li><a href="qtqml-referenceexamples-methods-birthdayparty-cpp.html">referenceexamples/methods/birthdayparty.cpp</a></li>
<li><a href="qtqml-referenceexamples-methods-birthdayparty-h.html">referenceexamples/methods/birthdayparty.h</a></li>
<li><a href="qtqml-referenceexamples-methods-example-qml.html">referenceexamples/methods/example.qml</a></li>
<li><a href="qtqml-referenceexamples-methods-main-cpp.html">referenceexamples/methods/main.cpp</a></li>
<li><a href="qtqml-referenceexamples-methods-methods-pro.html">referenceexamples/methods/methods.pro</a></li>
<li><a href="qtqml-referenceexamples-methods-methods-qrc.html">referenceexamples/methods/methods.qrc</a></li>
<li><a href="qtqml-referenceexamples-methods-person-cpp.html">referenceexamples/methods/person.cpp</a></li>
<li><a href="qtqml-referenceexamples-methods-person-h.html">referenceexamples/methods/person.h</a></li>
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